Ar irradiated Cr rich Ni alloy studied using positron annihilation spectroscopy

被引：14

作者：

Saini, Sanjay ^{[1
]}

Menon, Ranjini ^{[2
]}

Sharma, S. K. ^{[3
]}

Srivastava, A. P. ^{[1
]}

Mukherjee, S. ^{[3
]}

Nabhiraj, P. Y. ^{[2
]}

Pujari, P. K. ^{[3
]}

Srivastava, D. ^{[1
]}

Dey, G. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Mat Sci, Bombay 400085, Maharashtra, India

[2] Ctr Variable Energy Cyclotron, Kolkata 700064, India

[3] Bhabha Atom Res Ctr, Radiochem Div, Bombay 400085, Maharashtra, India

来源：

JOURNAL OF NUCLEAR MATERIALS | 2016年 / 479卷

关键词：

Heavy ion irradiation; Irradiation induced defects; Positron annihilation spectroscopy; ION-IRRADIATION; STRUCTURAL-MATERIALS; SUPERCRITICAL WATER; BASE ALLOYS; MATERIALS CHALLENGES; CORROSION BEHAVIOR; RADIATION-DAMAGE; HIGH-TEMPERATURE; PRESSURE TUBES; IMPLANTED SI;

D O I：

10.1016/j.jnucmat.2016.07.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study focuses on understanding the effect of Ar ion irradiation at room temperature on Cr rich Ni-Cr alloy. The alloy is irradiated with Ar9+ ions (energy 315 keV) for total dose varying from 9.3 x 10(14) to 2.3 x 10(16) ion/cm(2). The changes in the microstructure of the irradiated samples have been characterized by depth dependent Doppler broadening of annihilation radiation (DBAR) measurements using a slow positron beam facility. The variation in S-E profiles as a function of total dose corroborated with S-W curves indicates that the type of defects is also varied with the increase in total dose. The S-E profiles have been fitted using variable energy positron fit (VEPFIT) program considering a three layer structure for the irradiated samples. Estimated displacement damage profile as a function of increasing dose has been analyzed and a possible mechanism has been attributed to explain the observations made from S-parameter variation. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：279 / 286

页数：8

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